Concrete cribbing



Aug. 17,1926. 1,596,759

G. E. NAGEL CONCRETE CRI BBT NG Filed August 26, 1925 .ATTORNEY' Pai/rented Aug. 17, 1926.

are VT Geenen n. 'Nasen 'orv GREENVILLE, onto.

concentra carnefice;

Application inea August ae, 12525. serial No. $2,606;

This invention relates to an iin-proved reinforced concrete cribbing, designed pri'- marily for use in constructingretaining walls, such as used in connection with iills and embankments of railways, but it is to he understood that a cribbing set up from cribbing units, in accordance with this intention, can be employed for any purposes for which it is found applicable, and the invention has for its object to provide, in 'a manner as hereinafter set forth, a cribbing formed of'he-ader and stretcher units ofthe same shape whereby the units are interchangeablerand expeditiously installed, as well as incidentally simplifying the manufacturing thereof; on account of the header units` corresponding in contour to that of the stretch-er units.

A further objectof the invention is to provide, in a manner ashereinafter set forth, a cribbing formed ofA header Aunits and etretcherunits, the former corresponding in contour to the latter and. with each of the units having on one side thereof,`at each end,

' a right angularly disposed flange providing 'means to retain the sections ofthe cribbing endwise as well as laterally.

Further objects of the invention are to provide, in a manner as hereinafter set forth, a @ribbing unit capable of being employed as a header or stretcher, and which is simple in its construction, strong, durable, re inforced, thoroughly efficient in its use, ex pedi'tiously and conveniently installed, and

' lcomparatively inexpensive to manufacture.

I 1With the' foregoing and other objects in View, the invention consists of the novel construction, combination and arrangement of parts, as hereinafter more specilicallyv described and illustrated in the accompanying drawings, wherein is shownan embodiment of the invention', but it is to be understood that changes, variations and modifications can be resorted to which come within the scope of the claims hereunto appended.

In the drawings wherein like reference characters denote' corresponding parts 'throughout theseve'ral view'sz-e Figure l' is an elevati-ion of a cribbing set up from 'cribbing units; in accordance with this-invention; i' l c Figure 2' is aside elevationk of' a header or! a stretcher unit in accordance'with this invention, and further illustrating in dotted .lines the reinforcing.ineansforthe body portion of; the unit.` L

Figure 3 is a section on line 3--3, Figure 21. Referring to the drawings in det-ail, 1, deh notes an excavation in which isarianged an inclined cribbi'ng 2` set ua from header and stretcher units, in accordance with this invention. e e

In Figure l of the drayvings,` thelie'ader units are referred to generally by the ref;- erenoe character 3 and thestretcher'funits generally by th'e'referenc'e charactere. i

IThe header units correspond `in contour to theshape of the v. stretcheruni-ts, and, therefore, thel said header and'stretcher unit-s; are interchangeable, and owing to the fact that they are ofthe same contour the c-ribbin-g can be readily setup.l

The header, aswell'V asthe stretcherunit,

comprises a molded rectangular body portion 5 of concrete, of thedesiredlength,` and which is rectangular inl cross section, as shown in Figur-e 3.' The' side faces of the -body portion are indicated ato, 7,18 andi).

The face 6 isof less 'length than the' faces Y, 8 andQ, as the body portion 5 at each lend terminal thereof is formed with a short Vflange which is disposed at right angles with respect tothe side fac-e6. The l'angesare indicatedat l0, 111, andthe inner end face 12 of the -former terminates in one end of the face 6 adjacentthe end face 113 of the body portion 5. Therinner'end fac-e Le of the flange 1L terminatesin one en'df ofthe side face 6', at a pointV adjacent the 'other end face 15 of the body portion 5. The side lfaces of thefflanges 10 and 11 are flush respectively with the side faces iand 9 of the body portion, `and the outer endtfaces of the flanges 10 and 111 are flush respectively with the end vfaces 13,15 ofthe body portion c The side faces 7, 8 andi9 yof the body portion 5v are uninterrupt'ed't from end to end. rEhe. length of. eitherof the flangesV is substantially the saine as .thewidthV of thebody portion: 9, but the width voffeach ofxsaid flanges is materially less than the width of n thebody portion 5; p i

Embedded within the. body portion 'o is a seriesj ofy equally spaced supporting frames,

referred: tti-generally by lthe reference characterv l?? and each formed' off a top, bott-loin fandk apa-ir offsid'ez frame members-:intgral `with, each other;` Each-` of' the f-rarnes isV rectangular in contour and?` the"r material from yWhlc'lrthe bodyl portion" o' isxse't :up eX- tends through and: engages throughout the walls of the openings formedibyfsaid framesity to the flanges' 10 andy 11.

whereby these latter are rigidly anchored within the body portion. The frames, when positioned in the bodyportion, are vertically disposed and have a pair of opposed outer edges equally spaced from the side faces 7' and 9 of the body portion 5, andy thevother pair of opposed outer edges equally spaced from the side faces 6 and 8.of the body per-` tion. The outer edges of the frames which are spaced from the side faces .7 'and 9 of the body yportion are spaced a greater distance from said side faces than the distance the other pair of opposed outer edges` of the frames is spaced from the 'side faces 6 and S of the body portion 5. The outer `frames 17 of said series of frames are positioned inwardly with respect, but inv close proximranged a greater distance apart than the disl rtance between the openings in either ofthe side frame-members. Eachof the openings is formed with a. continiuous wall of circular contour. The pair of openings 19 vis arranged in horizontal alignment. The pair of openings 2O is arrangedv in horizontal alignment. rEhe pair of openingsl), is arranged in su'peipo'sed alignment with respect to the pair vof openings 20. -The pair of openings 21 is arranged in superposed alignment. The pair of openings'22 is arranged in superposed alignment. The pairs of openings19 and 20 are disposed-at right anglesA with respect to the pairs of openings 21 and 22. The openings of each pair are spaced from each other. The pairs of' openings in one frame` align With-.the pairs kof openings in an adjacent frame lwherebysets of aligning openings are provided.

Extending from. one end to the other end of the body portion ois a set of pairs of cylindrical reinforcing rods. The rods of one pair are indicated at 23, those of another pair'at 2-1, those of another pair at 25, and the rods of the reinainingpair at 26. The number of pairs of rods corresponds to the number of pairs of openings formed in the frames. The rods "23 extend through the openings 19, therods 24 through the openings 20, therods 25 through the openings 21, and lthe rods 26 through the openings 22. The pairs ofrods not only reinforce the body portion 5 but further constitute additional .As ther header .and stretcher units are of As the mateuni-form construction they can be interchanged when setting up the cribbing, or in other words the construction of the unit permits yit to be l employed as a header or a stretcher and which simplifies installation on account of all the units being exactly alike, and further incidentally simplifies the manufacturing of the header and stretcher units las these latter are uniform. The setting upl of the unit with the two flanges provides an i L-shaped head at each end thereof and which can be used to retain the sections endwise as well aslaterally.

lV hat I claim -is 1. A cribbing unit comprising a concrete body portion of appropriate length, a series oi opposed, spaced, continuousframescorviesponding in contour to the cross sectional tion, each 4set-of bars common to aligning Aframe members and extending through Vthe openings in these latter.

2. A cribbinunit com Jrisin@r a concrete 4body portion of appropriate length, a series of opposed, spaced, continuous frames corresponding incontour to the cross sectional shape of and completely embedded in said body portion, each ofthe frame members of each frame arranged in parallelism with Aa face of said body portion and aligning with the` corresponding frame member .of an`l adjacent frame, the material forming said body portion extending through and ,engaging throughout the wall ofthe opening formed by each frame to rigidly anchor vthelatter within the. body portion, each ot the frame members ofeach frame provided intermediate its ends with a set of spacedv openings, and a series of sets ofreinforcing bars disposed lengthwise of said body portion, each set of bars common to Ealigning frame members and extending through the 'openings in these latter, and the end terminal portions of said bars extended from the outer frames of the series of frames to the ends of said body portion.

3. A cribbing unit comprising a concrete body portion of appropriate length, a series of opposed, spaced, continuous frames correspending 1 in contour to the cross sectional shape of and completely embedded in said body portion, each 0f thefrlml members ico of each iframe arranged in parallelism With a ace of said body portion and aligning with the corresponding frame member of an adjacentrame, the material forming said body portion extending through and engaging throughout the Wall oi the opening formed by each trame to rigidly Ianchor the latter Within the body portion, and each of the trame members of each trame provided inter iediate its ends With a set of spaced openings, and a seres of sets ot' reinforcing bars disposed lengthwise. of said body portion, each set or bars common to `aligning' traine members and extending throughthe openings in these latter, and each of the openings in said trame members being of like contour and formed with a continuous 1Nall.

e. A cribbing unit comprising a concrete body portion of appropriate length, a series of opposed, spaced, continuous frames corresponding in contour to the cross sectional shape orl and completely embedded in said body portion, each of the trame members oi each `trame arranged in parallelism with a tace of said body portion and aligning With the corresponding 'frame memberof an ad jacent iframe, the material forming said body portion extending through vand engaging throughout theV Wall oi' the Vopening termed by each `trame to rigidly anchor the latter Within the body portion, and each of the trame members or each trame provided intermediate the ends With a set of spaced openings, and a series of setsot reinforcing bars disposed lengthwise of said body portion, each set of bars common to aligning 'ramemembers and extending through the openings in these latter, the set of openmes in one -frame member aligning with sets ot openings in the corresponding frame members or an adjacent frame.

cribbing unit comprising a concrete bcc y portion ot appropriate length and of angularcross section, a series of opposed, spaced, continuous trames corresponding in contour to the cross sectional shape ot and completely embedded in said body portion, the outer 'frames of said series spacd adje-.cent theends oi' said body portie.. each o said iframes including a top, a bott m and a pair of side frame members, the material forming said body portion eX- tending through and engaging throughout the wail oi the opening formed by each frame to rigidly anchor the latter Within the body portion, each of the trame members ot each tra :ie provided intermediate its ends with a set of spaced openings, and a series oi" sets of reintorcingbars disposed lengthof said body portion, each set o'f bars common to aligning frame members and eX- tending through the openings in these vlattoi', the openings of the sets in the top and bottom it'rame members of each frame being spaced a greater distance from each other than the openings of the sets of the side trame members of each trame, and the set of openings in one trame member aligning with the set or openings in the corresponding 'i 'traine member oi an adjacent frame.

in testimony whereof, I ai'ix my signature hereto. Y

GEORGE E. NAGEL; 

